<template>
  <!-- 商品分类部分 -->
  <div class="top-category">
    <div class="container">
      <!-- 面包屑组件 -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <transition name="fade-right" mode="out-in">
          <XtxBreadItem :key="topCategory.id">{{ topCategory.name }}</XtxBreadItem>          
        </transition>
      </XtxBread>
      <!-- 轮播图 -->
      <XtxCarousel :sliders="sliders" style="height:500px"></XtxCarousel>
      <!-- 二级分类 -->
      <div class="sub-list">
        <h3>全部分类</h3>
        <ul>
          <li v-for="item in topCategory.children" :key="item.id">
            <a href="javascript:;">
              <img :src="item.picture" alt="">
              <p>{{ item.name }}</p>
            </a>
          </li>
        </ul>
      </div>
      <!-- 分类关联商品 -->
      <div class="ref-goods">
        <div class="head">
          <h3>- 海鲜 -</h3>
          <p class="tag">温暖柔软，品质之选</p>
          <XtxMore />
        </div>
        <div class="body">
          <GoodsItem v-for="g in item.goods" :key="g.id" :goods="g"/>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { findBanner } from '@/api/home';
import { computed, ref, watch } from 'vue';
import { useCategoryStore } from '@/store/modules/category';
import { storeToRefs } from 'pinia';
import { useRoute } from 'vue-router';
import GoodsItem from './components/goods-item.vue'
import { findTopCategory } from '@/api/category';
export default {
    name:'TopCategory',
    components:{
      GoodsItem,
    },
    setup(){
      const categoryStore = useCategoryStore()
      const sliders = ref([])
      // 获取当前路由信息
      const route = useRoute()
      const topCategory = computed(()=>{
        let cate = {}
        const { list } = storeToRefs(categoryStore)
        const item = list.find(item => {
          return item.id === route.params.id
        })
        if(item) cate = item
        return cate
      })
      const Banner = async () => {
        const { data:{result}} = await findBanner()
        console.log("this is Banner in category")
        sliders.value = result
      }
      Banner()
      // 推荐商品
      const sublist = ref([])
      const getSublist = async () => {
        const { data:{result}} = await findTopCategory(route.params.id)
        sublist.value = result
      }
      watch(()=>route.params.id, (newVal)=>{
        if(newVal && `/category/${newVal}` === route.path) 
          getSublist()
      }, {immediate:true})

      return {
        sliders,
        topCategory,
        sublist
      }
    }
}
</script>

<style scoped lang="less">
.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }
  .sub-list {
    margin-top: 20px;
    background-color: #fff;
    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;
      li {
        width: 168px;
        height: 160px;
        a {
          text-align: center;
          display: block;
          font-size: 16px;
          img {
            width: 100px;
            height: 100px;
          }
          p {
            line-height: 40px;
          }
          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
  .ref-goods {
    background-color: #fff;
    margin-top: 20px;
    position: relative;
    .head {
      .xtx-more {
        position: absolute;
        top: 20px;
        right: 20px;
      }
      .tag {
        text-align: center;
        color: #999;
        font-size: 20px;
        position: relative;
        top: -20px;
      }
    }
    .body {
      display: flex;
      justify-content: flex-start;
      flex-wrap: wrap;
      padding: 0 65px 30px;
    }
  }
}
</style>